JPS63311008A - Combustion device - Google Patents

Abstract

PURPOSE:To prevent a noise or flame flare during maximum combustion or when a wind is blown in and to obtain a safe and favorable combustion device which has a good combustion characteristic and a wide range of adjustment for a combustion amount, by providing a wind shut-off plate between a flow controlling cylinder and an inner flame cylinder in a portion opposed to a vent hole of the flow controlling cylinder. CONSTITUTION:Between a flow controlling cylinder 21 and an inner flame cylinder 6 opposed to a vent hole 28 of the flow controlling cylinder 21 is provided a wind shut-off plate 34 whose top end is secured to a shielding portion 29 and whose lower end is continuous to an opening 34a. Since air entered through the vent hole 28 flows downward, after impinging against the wind shut-off plate 34, and is discharged through the opening so as to be supplied toward an air port 33, the holding of a stable flame at the portion thereof is not interfered by the air current and no combustion noise is generated. Further, the air entered through the vent hole 28 is streamed into a lower flow control area 30 in a clean current form, and consequently the mixture with unburnt gas can be efficiently carried out. Even when the exposed height of a wick 1 is lowered, combustion is quickly accelerated in the same state as mentioned above without generating combustion noise, nor even causing the flicker of a flame, etc., and accordingly the clear combustion generating less CO or malodor may be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a combustion device used for home heating and the like.

2. Description of the Related Art Conventionally, as this type of combustion device, there is a wick-type combustion device used in kerosene stoves and the like. This wick-type combustion device does not require a 100V power source like oil fan heaters, etc., which means it does not require a power cord, so it has the advantage of being easily portable, but if you reduce the amount of combustion a little, it will reduce CO2.
One problem is that the combustion amount adjustment range is narrow.

As a solution to this problem, the applicant has already proposed a combustion device with a wide combustion amount adjustment range as shown in FIG. This combustion device will be explained below.
In FIG. 2, reference numeral 1 denotes a lamp wick, which is set between an inner wick tube 2 and an outer wick tube 3 so as to be vertically movable. Core inner cylinder 2 and core outer cylinder 3
The upper end portions form an inner flame plate 4 and an outer flame plate 5, respectively, and an inner flame tube 3 and an outer flame tube 7 are mounted on the inner flame tube 3 and the outer flame tube 7, respectively. During combustion, the tip of the wick 1 is exposed to the combustion chamber 8 formed between the inner flame tube 6 and the outer flame tube 7, where combustion and vaporization occur. 9 is the outer cylinder,
The inner flame tube 6, the outer flame tube 7, and the outer tube 9 are arranged approximately concentrically from the inside in order and are integrated by a fixing pin 10. 11
The inner flame tube 6 and the outer flame tube 7 have multiple stages of air holes. Reference numeral 12 denotes an inner flame tube top plate that closes the upper end opening of the inner flame tube 6, and has a ventilation hole 13 communicating upward from the inside of the inner flame tube 6. 14 is a flame expansion plate placed on the top plate 12 of the inner flame tube. A constriction part 1S is formed at the upper end of the outer cylinder 9, and a red-hot part 16 is formed in the outer flame cylinder 7 above the constriction part 15, and a through hole 17 with a large opening is provided. 1
8 is a transparent tube made of a transparent material such as glass, and an outer flame tube 9
It is placed on top. A top frame 19 is placed on the upper end of the red-hot part 16 so as to cover the upper end of the air passage 20 between the red-hot part 16 and the transparent cylinder 18, and fixes the n1 transparent cylinder 18 thereto. 21 is a flow control tube installed inside the inner flame tube 6,
A control area 22 extending upward from near the position facing the tip of the lamp wick 1 to near the tip of the inner flame tube 6 and formed between the inner flame tubes 6.
It is provided so that it is shielded by its bottom surface. 23 is an air introduction path.

Reference numeral 24 denotes a combustion control tube, which is set at the inner upper part of the outer flame tube air hole section 25, and whose upper end extends to the vicinity of the position facing the throttle section 15 of the outer flame tube 7, and between it and the air hole section 25, an air chamber 26 is formed. It is formed. Reference numeral 27 denotes communication holes provided in the wall surface of the combustion control cylinder 24, which are uniformly provided in large numbers so as to communicate the air chamber 26 and the combustion chamber 8.

Reference numeral 28 denotes a ventilation hole provided in the middle and lower wall of the flow control tube 21. 29 is directly above the ventilation hole 28 and converts the control area 22 into the monarchy area 30.
This is a shielding portion that divides the flow control tube 21 into a flow control region 31 and a flow control region 31, and is formed by applying beading processing, flaring processing, etc. to make the flow control tube 21 protrude in the outer circumferential direction. 32 is the flow control tube 21
There is a two-ventilation section set so as to leave a certain distance between the inner flame tube top plate 12 and the inner flame tube top plate 12.

In the above configuration, when the lamp wick 1 is ignited, combustion starts, and high-temperature combustion gas rises in the combustion chamber 8, creating a thermal draft, and the air necessary for combustion is transferred to the inner flame tube 6 and the outer flame tube. 7 air hole 11 and red hot part 1
The fuel is supplied into the combustion chamber 8 through the through hole 17 of No. 6, and combustion continues.
Ru. At this time, the air supplied from the inner flame tube 6PU side separates the air flowing from below the flow control tube 21 to the vicinity of the lamp wick 1 and the air flowing upward through the air introduction path 28. A portion of the rising air passes through the vent 28 and is supplied to the combustion chamber 8. Further, the air supplied above the inner flame cylinder 6 is supplied from the air holes 11 and the ventilation holes 13 to the combustion chamber 8 and above. A part of the mafko descends into the hair splitting area 31,
Air is also supplied to the combustion chamber 8 from a relatively lower air hole 11.

- The gasified fuel becomes a mixed gas with air and mainly rises in the combustion chamber 8. However, since the pressure in the royal basin 3o and the royal basin 31 becomes negative, a portion of the mixed gas flows into the royal basin 30 and the royal basin 31F3. As a result, the monarch basin 30 and the monarch basin 31 are filled with unburned gas. This unburned gas is mixed with the air flow in the vent hole 28 and the vent section 32, and is again supplied to the combustion chamber. At the time of strong twist firing, unburnt gas and air are pumped out from near the upper end of the inner flame tube 6 (6
Since it is mixed and supplied to the vicinity of the upper end of the combustion chamber 8 in a mixed state, it is efficiently combusted near area A, and unburned gas that is not completely combusted here is combusted by the flame formed above. Ru. Next, when the exposed height of the lamp wick 1 is lowered to reduce the amount of combustion, the flame gradually descends into the combustion chamber 8 (the flow in this case is the same as that during hard twist firing, but the flame is vaporized). Since the gas has been greatly reduced, the amount of unburned gas flowing into the monarch region 31 is also reduced.Therefore, the vicinity of region B becomes a good mixing region, and a stable flame is formed in this region, causing the wall surface of the inner flame tube 6 to is made red hot, and the combustion is completed with a flame formed above it.In this case, the unburned gas flowing into the monarch basin 31 is
Since most of the gas is supplied into the combustion chamber 8 and burned by the flame, there is almost no unburned gas component in the monarch basin 31 facing above the flame, and the air vents 11 and ventilation holes 13 above the flame are The air discharged from the
/co2) does not deteriorate. The combustion amount can be reduced to a considerably low level by stepping back, and the combustion amount can be adjusted to a wide range.

7t, -17 Mako, even when igniting, the communication hole 27 and the ventilation hole 28
Since air is efficiently supplied from the combustion chamber 8 to the lower part of the combustion chamber 8, combustion is promoted quickly and less gas, carbon dioxide, and odor are generated. The same effect can be obtained by burning it for a long time in a well-sealed room. In other words, under oxygen-deficient conditions, the amount of combustion decreases as the oxygen concentration decreases, and the exposed height of the wick 1 is lowered to reduce the amount of combustion (almost the same phenomenon as in the case of f) is observed. Since air is supplied to the combustion chamber 8 from the vent hole 28, combustion is promoted there and oxygen deficiency characteristics are also improved.

Problems to be Solved by the Invention However, in the above configuration, the vent hole 2 of the flow control cylinder 21
Since the pores 33 of the inner flame tube 6 facing the flame tube 8 are easily affected by changes in the amount and flow velocity of air flowing in from the vent hole 28, flame holding becomes extremely unstable and pulsation occurs during combustion. There are practical problems such as noise and flame shaking. This phenomenon is particularly likely to occur during the strongest twist firing, where the thermal draft is strong and the flow velocity is maximum, or when there is an external air flow such as wind.

The present invention solves these conventional problems by preventing noise and flame swaying during maximum twisting and wind blowing.
The objective is to obtain a safe and comfortable combustion device that has good combustion characteristics, a wide range of combustion amount adjustment, and has no practical problems.

Means for Solving the Problems In order to solve the above-mentioned problems, the combustion apparatus of the present invention includes a wind shield plate between the inner flame tube and the flow control tube in the portion facing the vent of the flow control tube. This is the configuration provided.

Effect The present invention, with the above-described configuration, suppresses the influence of air from the ventilation holes of the flow restrictor tube from directly reaching the flame-holding pores of the inner flame tube, and after mitigating fluctuations in flow velocity and flow rate to a certain extent. This allows combustion to continue without producing combustion noise or flame fluctuation.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. The same 9-benzo parts as those in FIG. A wind shielding plate 34 is provided between the inner flame tube 6 and the flow restricting tube 21 facing the ventilation hole 28 of the flow restriction tube 21, and the upper end of this wind shielding plate 34 is fixed to the shielding part 29 (bath contact). At the same time, the lower part is made into an opening 34a.

In the above configuration, combustion is carried out in the same manner as described above and in FIG. Board 3
Since air enters through the ventilation hole 28 and hits the wind shield plate 34, it flows out from the opening at the bottom and is supplied to the air hole 33, so that the flame can be stabilized in that area. is not disturbed by air flow and does not produce combustion noise. Furthermore, since the air from the vent hole 28 is brought into the flow area 30 in a clear flow, it can be efficiently mixed with unburned gas. This theory holds true even when the exposed height of the lamp wick 1 is lowered. In this way, combustion is promoted quickly without combustion noise or flame turbulence, and clean combustion with less CO and odor can be achieved.

Effects of the Invention As described above, the combustion apparatus of the present invention not only expands the combustion amount during adjustment, but also reduces combustion noise and The flame does not waver, and since a stable flame is formed in the pores of the inner flame tube facing the windshield as before, there is no decrease in red glow brightness and the amount of combustion is reduced. A safe and practically comfortable combustion device with a wide adjustment range can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a combustion device according to an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of a combustion device showing a conventional example. 1...Light wick, 6...Inner flame cylinder, 7...
...Outer flame tube, 8... Combustion chamber, 9...
Outer cylinder, 11... Air hole, 18... Transmission tube, 21... Control tube, 22... Control area, 24...・Combustion control tube, 25... air hole part, 26... 111... air chamber, 27... communication hole, 28... ventilation hole, 29... ... Shielding part, 33 ... Inner flame tube air hole, 34 ... Wind shield plate. Name of agent: Patent attorney Toshio Nakao and 1 other person/
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Claims (1)

[Claims] an outer flame tube consisting of a pore section having a large number of air holes and a red-hot section formed above the pore section, an inner flame tube having a large number of air holes disposed inside the outer flame tube, and the outer flame tube. an outer cylinder located outwardly, a transparent cylinder placed above the outer cylinder, and a lamp wick vertically movable at a lower end of a combustion chamber formed between the outer flame cylinder and the inner flame cylinder; a flow control tube disposed inside the inner flame tube, extending from near a position facing the lamp wick to near an upper end of the inner flame tube, and shielding a control area formed between the inner flame tube and the inner flame tube with a lower surface; , a ventilation hole provided at at least one place on the wall surface of the flow control cylinder; a shielding part that divides the control area into upper and lower parts immediately above the ventilation hole; a combustion control tube forming an air chamber between the combustion control tube and a communication hole provided in a wall surface of the combustion control tube, the inner flame tube and flow control tube facing the ventilation holes of the flow control tube; A combustion device with a wind shield between the